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ADM1020AR PDF预览

ADM1020AR

更新时间: 2024-11-23 20:55:27
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管
页数 文件大小 规格书
12页 131K
描述
IC SPECIALTY ANALOG CIRCUIT, PDSO8, SOIC-8, Analog IC:Other

ADM1020AR 数据手册

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8-Lead, Low-Cost, System  
Temperature Monitor  
a
ADM1020  
FEATURES  
PRODUCT DESCRIPTION  
On-Chip and Remote Temperature Sensing  
No Calibration Necessary  
The ADM1020 is a two-channel digital thermometer and  
under/over temperature alarm, intended for use in personal  
computers and other systems requiring thermal monitoring and  
management. The device can measure the temperature of a  
microprocessor using a diode-connected NPN or PNP transis-  
tor, which may be provided on-chip in the case of the Pentium®  
II or similar processors, or can be a low-cost discrete device  
such as the 2N3904. A novel measurement technique cancels  
out the absolute value of the transistor’s base emitter voltage, so  
that no calibration is required. The second measurement chan-  
nel measures the output of an on-chip temperature sensor, to  
monitor the temperature of the device and its environment.  
1؇C Accuracy for On-Chip Sensor  
3؇C Accuracy for Remote Sensor  
Programmable Over/Under Temperature Limits  
Programmable Conversion Rate  
2-Wire SMBus™ Serial Interface  
Supports SMBus Alert  
70 A Max Operating Current  
3 A Standby Current  
+3 V to +5.5 V Supply  
8-Lead SOIC Package  
The ADM1020 communicates over a two-wire serial interface  
compatible with System Management Bus (SMBus) standards.  
Under and over temperature limits can be programmed into the  
devices over the serial bus, and an ALERT output signals when  
the on-chip or remote temperature is out of range. This output  
can be used as an interrupt, or as an SMBus alert.  
APPLICATIONS  
Desktop Computers  
Notebook Computers  
Smart Batteries  
Industrial Controllers  
Telecommunication Equipment  
Instrumentation  
FUNCTIONAL BLOCK DIAGRAM  
ADDRESS POINTER  
REGISTER  
ONE-SHOT  
REGISTER  
CONVERSION RATE  
REGISTER  
LOCAL TEMPERATURE  
VALUE REGISTER  
LOCAL TEMPERATURE  
LOW LIMIT COMPARATOR  
LOCAL TEMPERATURE  
LOW LIMIT REGISTER  
ON-CHIP TEMP.  
SENSOR  
LOCAL TEMPERATURE  
HIGH LIMIT COMPARATOR  
LOCAL TEMPERATURE  
HIGH LIMIT REGISTER  
D+  
D–  
ANALOG  
MUX  
8-BIT A-TO-D  
CONVERTER  
REMOTE TEMPERATURE  
LOW LIMIT COMPARATOR  
REMOTE TEMPERATURE  
LOW LIMIT REGISTER  
RUN/STANDBY  
BUSY  
REMOTE TEMPERATURE  
VALUE REGISTER  
REMOTE TEMPERATURE  
HIGH LIMIT COMPARATOR  
REMOTE TEMPERATURE  
HIGH LIMIT REGISTER  
CONFIGURATION  
REGISTER  
EXTERNAL DIODE OPEN-CIRCUIT  
INTERRUPT  
MASKING  
ALERT  
STATUS REGISTER  
ADM1020  
SMBUS INTERFACE  
V
GND  
SDATA  
SCLK  
ADD  
DD  
SMBus is a trademark of Intel Corporation.  
Pentium is a registered trademark of Intel Corporation.  
REV. 0  
Information furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assumed by Analog Devices for its  
use, nor for any infringements of patents or other rights of third parties  
which may result from its use. No license is granted by implication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 1999  

ADM1020AR 替代型号

型号 品牌 替代类型 描述 数据表
ADM1020AR-REEL7 ADI

完全替代

8-Lead, Low-Cost, System Temperature Monitor
ADM1020AR-REEL ADI

完全替代

8-Lead, Low-Cost, System Temperature Monitor

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SPECIALTY ANALOG CIRCUIT, PDSO16, MO-137AB, QSOP-16